CN111171459A - Polypropylene modified material and preparation method thereof - Google Patents
Polypropylene modified material and preparation method thereof Download PDFInfo
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- CN111171459A CN111171459A CN202010072672.9A CN202010072672A CN111171459A CN 111171459 A CN111171459 A CN 111171459A CN 202010072672 A CN202010072672 A CN 202010072672A CN 111171459 A CN111171459 A CN 111171459A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 99
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 99
- -1 Polypropylene Polymers 0.000 title claims abstract description 95
- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 41
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 37
- 239000002216 antistatic agent Substances 0.000 claims abstract description 37
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 35
- 239000002245 particle Substances 0.000 claims abstract description 30
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 19
- 239000006229 carbon black Substances 0.000 claims abstract description 19
- 239000004917 carbon fiber Substances 0.000 claims abstract description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims description 22
- 229920001577 copolymer Polymers 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 18
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 12
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 12
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 12
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 239000000178 monomer Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- 150000007970 thio esters Chemical class 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 150000002989 phenols Chemical class 0.000 claims description 2
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- 229920006124 polyolefin elastomer Polymers 0.000 claims 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 9
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a polypropylene modified material and a preparation method thereof, wherein the polypropylene modified material is prepared from 70-85 parts of polypropylene resin, 5-10 parts of POE, 5-15 parts of an antistatic agent, 0.2-0.4 part of an antioxidant, 0.1-0.3 part of a lubricant and 0.2-0.4 part of a coupling agent in parts by weight, wherein the antistatic agent is a mixture of carbon fiber filaments and carbon black particles. The polypropylene modified material has excellent toughness and good antistatic performance.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a polypropylene modified material and a preparation method thereof.
Background
The polypropylene resin is one of five general-purpose plastics, has the advantages of low density, low production cost, good comprehensive performance, corrosion resistance, easy processing and the like, is widely applied to the fields of household appliances, automotive interior and exterior decorations, office supplies, daily necessities and the like, and plays a very important role in high polymer materials. The antistatic effect of polypropylene products in the market is poor, and in addition, the addition of the antistatic agent can cause the problems of precipitation and the like, thereby affecting the toughness of the polypropylene resin and limiting the application of the polypropylene resin.
Disclosure of Invention
In view of the above, the invention needs to provide a polypropylene modified material and a preparation method thereof, and by adding an antistatic agent into a formula system and optimizing the formula, the antistatic property of a polypropylene material can be remarkably improved while the toughness of the polypropylene material is ensured, and the technical problems of precipitation and influence on the toughness of polypropylene resin existing after the antistatic agent is added to polypropylene in the prior art are solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a polypropylene modified material, which is prepared from 70-85 parts of polypropylene resin, 5-10 parts of POE, 5-15 parts of an antistatic agent, 0.2-0.4 part of an antioxidant, 0.1-0.3 part of a lubricant and 0.2-0.4 part of a coupling agent in parts by weight, wherein the antistatic agent is a mixture of carbon fiber filaments and carbon black particles. In the invention, a mixture compounded by carbon fiber filaments and carbon black particles is added into the system, so that the surface resistivity of the polypropylene modified material reaches 5-7 orders of magnitude, and the antistatic property of the polypropylene material is obviously improved, wherein the mixture of the carbon fiber filaments and the carbon black particles refers to a state of uniformly mixing the carbon fiber filaments and the carbon black particles, and the blending mode is not particularly limited as long as the purpose of uniformly mixing can be realized.
Further, the polypropylene resin in the present invention can be selected conventionally in the art, and polypropylene is generally classified into co-polypropylene and homo-polypropylene, and the impact resistance of co-polypropylene is significantly better than that of homo-polypropylene, so that in some embodiments of the present invention, the polypropylene resin is co-polypropylene. While the impact resistance of the copolymerized polypropylene having a low melt flow rate is better, it is preferable that the copolymerized polypropylene has a mass melt flow rate of 3 to 35g/10min under a load of 21.17N at a temperature of 230 ℃ so that the polypropylene-modified material has good impact resistance.
Further, in some embodiments of the present invention, the POE is an ethylene-octene copolymer having an octene monomer content of 20% to 30%, so that the toughness and heat resistance of the polypropylene modified material can be improved.
Further, in some embodiments of the present invention, it is preferable that the carbon fiber filaments have a diameter of 500 to 800nm, and the carbon black particles have a particle size of 100 to 500 nm.
Further, in the antistatic agent, the relationship of the proportion also has a certain influence on the effect of static electricity resistance, and therefore, in some embodiments of the present invention, it is preferable that the mass ratio of the carbon fiber filaments to the carbon black particles is 1: (1-2), thereby optimizing the antistatic effect of the polypropylene modified material.
Further, the antioxidant comprises at least one of hindered phenols, thioesters and phosphites. The antioxidants of the present invention are conventional in the art and, therefore, are not described in detail herein. Preferably, the antioxidant is compounded by hindered phenol and thioester antioxidants, so that the anti-aging performance of the polypropylene modified material in a double-screw extruder and a use environment can be improved, and the toughness and the rigidity retention rate of the polypropylene material are improved.
Further, the lubricant in the present invention may be a conventional choice in the art, and specific examples that may be mentioned include at least one of EBS, PETS, zinc stearate, calcium stearate, erucamide, but not limited to the above. Preferably, erucamide is preferred as a lubricant in some embodiments of the present invention, so as to provide good mold release performance, improve the processability of the polypropylene modified material at high temperature, and the small erucamide molecules can migrate to the surface of the polymer, improve the distribution of the antistatic agent on the surface of the polypropylene material, and further improve the antistatic performance of the polypropylene modified material.
Further, the coupling agent in the present invention includes at least one of a siloxane coupling agent and a titanate coupling agent. Preferably, in some embodiments of the present invention, the siloxane coupling agent is selected, so that the compatibility between the polypropylene modification material and the antistatic agent can be improved, the dispersibility of the antistatic agent is better, and the precipitation of the antistatic agent in later use is significantly reduced.
In a second aspect of the present invention, there is provided a method for preparing the polypropylene modified material according to the first aspect of the present invention, comprising the steps of:
fully mixing the dried polypropylene resin, POE, antistatic agent, antioxidant, lubricant and coupling agent according to the proportion to obtain a uniform mixed material; before the polypropylene resin is used, the polypropylene resin is dried, preferably at 80 ℃, and it is understood that the temperature is only for example and the drying temperature is not limited to 80 ℃ as long as the drying purpose can be achieved. And the specific parameters of the mixing are not limited as long as the purpose of uniform mixing can be achieved, and in some preferred embodiments of the invention, the mixing time is 10-15 min.
And adding the mixed material into a double-screw extruder through a main feeding hopper, melting, extruding and granulating to obtain granules, and drying the granules to obtain the polypropylene modified material.
Further, the temperature of a charging barrel of the double-screw extruder is 200-210 ℃, the rotating speed of a screw is 350-400rpm, and the vacuum degree is-0.04 to-0.1 MPa;
the drying temperature is 80 +/-5 ℃ and the drying time is 3-4 h.
Compared with the prior art, the antistatic polypropylene material has the advantages that the antistatic performance of the polypropylene material can be obviously improved by the formula system, and meanwhile, the good toughness of the material is kept.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
After drying the copolymerized polypropylene resin at 80 ℃, weighing 70 parts of copolymerized polypropylene resin, 5 parts of ethylene-octene copolymer, 5 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent according to parts by weight, adding the weighed materials into a high-speed stirrer, and mixing for 10 minutes to obtain a uniform mixed material;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 800nm and carbon black particles with the particle size of 500 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 2
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 5 parts of ethylene-octene copolymer, 5 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, so as to obtain a uniform mixed material;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 800nm and carbon black particles with the particle size of 500 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 3
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 5 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, so as to obtain a uniform mixed material;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 800nm and carbon black particles with the particle size of 500 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 4
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 10 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, and uniform mixed materials are obtained;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 800nm and carbon black particles with the particle size of 500 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 5
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 10 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of EBS and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, so as to obtain a uniform mixed material;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 800nm and carbon black particles with the particle size of 500 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 6
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 10 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, and uniform mixed materials are obtained;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 700nm and carbon black particles with the particle size of 300 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 7
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 10 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, and uniform mixed materials are obtained;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of carbon fiber filaments with the diameter of 500nm and carbon black particles with the particle size of 100nm in a ratio of 1: 1;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 8
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 10 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, and uniform mixed materials are obtained;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of carbon fiber filaments with the diameter of 500nm and carbon black particles with the particle size of 100nm in a ratio of 1: 2;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
Example 9
After the copolymerized polypropylene resin is dried at 80 ℃, 85 parts of copolymerized polypropylene resin, 10 parts of ethylene-octene copolymer, 15 parts of antistatic agent, 0.2 part of antioxidant, 0.1 part of erucamide and 0.2 part of siloxane coupling agent are weighed according to parts by weight and are added into a high-speed stirrer to be mixed for 10 minutes, so as to obtain a uniform mixed material;
adding the mixed material into a double-screw extruder, melting, extruding and granulating to obtain granules, and drying the granules at 85 ℃ for 3 hours to obtain the polypropylene modified material, wherein the working temperature of each area of the double-screw extruder is as follows: the first zone was 180 ℃, the second zone was 190 ℃, the third zone was 195 ℃, the fourth zone was 190 ℃, the fifth zone was 190 ℃, the sixth zone was 190 ℃, the seventh zone was 200 ℃, the eighth zone was 190 ℃, the ninth zone was 190 ℃, the tenth zone was 200 ℃, the head temperature was set to 205 ℃, the screw speed was set to 400rpm, and the vacuum was-0.08 Mpa.
The mass melt flow rate of the copolymerized polypropylene resin in the embodiment is 3g/10min under the conditions of 230 ℃ and 21.17N load;
the content of an octene monomer of the ethylene-octene copolymer is 20-30 percent;
the antistatic agent is a mixture of 1:1 consisting of carbon fiber filaments with the diameter of 800nm and carbon black particles with the particle size of 500 nm;
the antioxidant is a compound antioxidant consisting of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 2.
The polypropylene modified material prepared in the embodiment is subjected to related performance tests, and after the polypropylene modified material is dried in a constant-temperature air drying oven at 80 ℃ for 2-3h, the related test method is as follows:
tensile strength: according to the GB/T1040 method, the stretching speed is 50 mm/min;
bending strength: according to the method of GB/T9341, the experimental speed is 2 mm/min;
notched izod impact strength: according to GB/T1843 method, experimental method, 4mm thickness sample;
surface resistivity: the test was carried out according to IEC60093-1980, 3mm thickness jig.
The test results are shown in table 1:
results of the Properties measurements relating to the Polypropylene modified materials in the examples of Table 1
According to the test results in table 1, the polypropylene modified material of the present invention has excellent antistatic performance while maintaining good mechanical properties, and examples 4 to 7 show that the surface resistivity of the polypropylene modified material can be enhanced more efficiently by the preferable antistatic agent addition ratio and the reasonable antistatic agent structure composition, and the performance of the polypropylene material is maintained to the maximum extent.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The polypropylene modified material is characterized by being prepared from 70-85 parts of polypropylene resin, 5-10 parts of POE (polyolefin elastomer), 5-15 parts of antistatic agent, 0.2-0.4 part of antioxidant, 0.1-0.3 part of lubricant and 0.2-0.4 part of coupling agent in parts by weight, wherein the antistatic agent is a mixture of carbon fiber filaments and carbon black particles.
2. The polypropylene modification material of claim 1, wherein the polypropylene resin is a co-polypropylene having a mass melt flow rate of 3 to 35g/10min at a temperature of 230 ℃ and a load of 21.17N.
3. The polypropylene modified material of claim 1, wherein the POE is an ethylene-octene copolymer having an octene monomer content of 20% to 30%.
4. The polypropylene modified material according to claim 1, wherein the carbon fiber filaments have a diameter of 500 to 800nm, and the carbon black particles have a particle size of 100 to 500 nm.
5. The polypropylene modified material according to claim 1, wherein the antistatic agent comprises the carbon fiber filaments and the carbon black particles in a mass ratio of 1: (1-2).
6. The polypropylene modification of claim 1, wherein the antioxidant comprises at least one of hindered phenols, thioesters, and phosphites.
7. The polypropylene modified material of claim 1, wherein the lubricant comprises at least one of EBS, PETS, zinc stearate, calcium stearate, erucamide.
8. The polypropylene modified material of claim 1, wherein the coupling agent comprises at least one of a siloxane coupling agent, a titanate coupling agent.
9. A process for the preparation of a polypropylene modification according to any one of claims 1 to 8, comprising the steps of:
fully mixing the dried polypropylene resin, POE, antistatic agent, antioxidant, lubricant and coupling agent according to the proportion to obtain a uniform mixed material;
and adding the mixed material into a double-screw extruder through a main feeding hopper, melting, extruding and granulating to obtain granules, and drying the granules to obtain the polypropylene modified material.
10. The preparation method of claim 9, wherein the cylinder temperature of the twin-screw extruder is 200 to 210 ℃, the screw rotation speed is 350 to 400rpm, and the vacuum degree is-0.04 to-0.1 MPa;
the drying temperature is 80 +/-5 ℃ and the drying time is 3-4 h.
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| CN115058078A (en) * | 2022-03-28 | 2022-09-16 | 杭州巨星科技股份有限公司 | Nanometer dustproof polypropylene filter material and preparation method and application thereof |
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